vfox cannot install `Oracle GraalVM Early Access Builds` present in `foojayio/discoapi`

[linghengqian]

• vfox cannot install Oracle GraalVM Early Access Builds present in foojayio/discoapi.
• According to https://api.foojay.io/swagger-ui#/default/getDistributionsV3 , https://github.com/graalvm/oracle-graalvm-ea-builds is available via foojayio/discoapi.
• 
• It sounds like we could do something like vfox install java@26.ea.1-graal. But this is not possible. Here are the results in Powershell 7.

PS C:\Users\lingh> vfox install java@26.ea.1-graal
plugin [PreInstall] method error: C:\Users\lingh\.version-fox\plugin\java\hooks\pre_install.lua:24: attempt to index a non-table object(nil) with key 'links'
stack traceback:
        C:\Users\lingh\.version-fox\plugin\java\hooks\pre_install.lua:24: in main chunk
        [G]: ?
failed to install java

• In contrast, with SDKMAN! I can run sdk install java 26.ea.1-graal. Early investigations into JDK 26 come from Add runtimeArgs support to native-maven-plugin graalvm/native-build-tools#734 , [Feature]: Add vfox plugin impl of WebAssembly/binaryen vfox#476 and https://github.com/graalvm/oracle-graalvm-ea-builds/releases/tag/jdk-26.0.0-ea.01 .

[linghengqian]

See #57 .